Does anyones leak? If I fill the cup w/ milk and leave it standing up, it leaks from the straw(pools around cap) before my son has began drinking.
22222
Yes! That happens with all my thinkster straw cups as well. I emailed the company to see if I just need to replace the straw or if there is something wrong and never received a reply. I also tried calling and no answer!
22223
this happens with every straw cup we have when we put milk in it. i think the comment below about pressure is correct.
22224
If you start with a very cold drink, the pressure inside the cup will change as it warms up and will leak out the straw a little. Unscrew the top and pinch the straw open to level the pressure again and then tighten it back up.
22225
Yes. Mine leaks horribly! Even after she drinks out of it and I relieve the pressure. The milk always creeps up the straw. I sent the company an email about it and am awaiting a response.
1560763
It doesn't leak for me. Only what's left in th ever top part after they drink will come out. I'm very happy with it.
1700875
Haven't knocked mine over "yet" so I filled it with water, put the straw in the lid and turned it on its side to test it. Water came out of the minimal area around the straw. A rubber gasket holds the lid on very tightly, but there is no gasket around the straw area. Water will leak at that point only. I love this tumbler and use it as much as possible.
1640405
Yes. For mine, when you screw the top on, even really screwing it on tight, it will still leak when shaking it around or turning it over. A friend of mine has the exact same cup, his does not leak when screwing it on tight.
844458
No I have not. But the lid screws onto the cup. I absolutely love the mug. Had it since Christmas and it has not leaked at all and completely seals after drinking.
1288500
There are no numbers on this one so you have to calculate the amount of water or milk you put on it. There is absolutely no leaking with this sippy cup, even when upside down. They do come with an extra seal if you want to make sure but I have never used those and never had a problem.
1640404
My cup itself doesn't leak if for some reason i get my drink inside the lid when i close my cup the water or whatever i have in there will drip from the lid. Other than that it doesn't leak.
1285395
I haven't had any problem with mine but if is leaking something other than coffee I would sure return it!!!!
2145758
It has not leaked yet....pretty surprised as all other beverage containers have leaked! I've only owned it for about a month but after a summer of use we will see.
1566981
I found that to be a big problem. My two year olds were getting frustrated trying to drink through the plastic valve, so I tried it myself. Even I, an adult, could barely get liquid through the valve, so I don't think babies/toddlers can. Without the plastic valve, the sippy cap is not leak proof. I returned my set to Amazon.
1598420
We haven't had any problems with leaking if the lid is on right. And if you are sure that the rubber little sip lid is closed all the way down. But, we don't usually put it in a bag because some of the reviews said theirs leaked all over. It has been upside down quite a few times though and never leaked. but for some reason this particular bottle, and only this particular pink one (we have a few), has an issue with the lid going on straight. I have to check it every time we use it to make sure it's on right and it often times takes 2 times of screwing it on before its on right. But that's not a big ideal. Overall a good bottle. We haven't had any problems with leaking if the lid is on right. And if you are sure that the rubber little sip lid is closed all the way down. But, we don't usually put it in a bag because some of the reviews said theirs leaked all over. It has been upside down quite a few times though and never leaked. but for some reason this particular bottle, and only this particular pink one (we have a few), has an issue with the lid going on straight. I have to check it every time we use it to make sure it's on right and it often times takes 2 times of screwing it on before its on right. But that's... » Read More We haven't had any problems with leaking if the lid is on right. And if you are sure that the rubber little sip lid is closed all the way down. But, we don't usually put it in a bag because some of the reviews said theirs leaked all over. It has been upside down quite a few times though and never leaked. but for some reason this particular bottle, and only this particular pink one (we have a few), has an issue with the lid going on straight. I have to check it every time we use it to make sure it's on right and it often times takes 2 times of screwing it on before its on right. But that's not a big ideal. Overall a good bottle. « Show Less
156553
Mine leaked as well and I discovered that if I tilt the feeding tube back a bit it helped. In other words raise the end up. Sometimes it helps to totally stop the leaking and other times to a small drip. At least its better.
429990
My grandson also left his open all of the time and we never had any leaks. Once he decided to start chewing on the straw and leaving little gashes in the plastic is when it started to leak some. I love this and if I had discovered them while he was still young enough, I would have had a cupboard full of them. They keep cold drinks very cold and hot drinks hot and we even added a clip to it so he could carry it on his belt loop, bike etc!
138398
There's a round plastic insert that goes over the top of the bottle (between the bottle part and the nipple) that keeps it from leaking. If you don't use the insert, it does leak.
1213766
We have found if the hole is on the top nothing comes out for my baby. We have not had leaking but she don't get anything if its the wrong way. I love these bottles my baby goes breast to bottle and bottle to breast with no problems. And I think an older baby would prefer the bottle the correct way and have no problem self feeding.
128594
I don't remember what age I gave it to my son, but I think it is a good "first" cup. Mine didn't leak, so that's very helpful for containing a mess and making it more likely that you will let him play with it and use it more often. The straw top is closed and has slits that allow liquid to come through when your baby takes a sip; at the same time, your baby doesn't have to sip too hard to get some liquid out. It's got a narrow body that can feel like bottle (if you don't use the handles).
381778
The straw lid does leak. It is really designed to be upright. It's the one downside.